Channel Quality Reporting for Full-Duplex Radio

1. An apparatus, comprising: one or more processing elements including analog self-interference cancelation (SIC) circuitry and one or more digital SIC processing elements, wherein the one or more processing elements are configured to: receive a reference signal in a wireless communication; and determine an effective signal to interference plus noise ratio (SINR) for full-duplex (FD) communications, based on the reference signal, wherein the effective SINR for FD communications is based on: a measured SINR of the reference signal; and one or more measured self-interference cancelation (SIC) levels that include an analog SIC level generated by the analog SIC circuitry and a digital SIC level generated by the one or more digital SIC processing elements, wherein the analog SIC level is determined based on power of a wireless transmission by the apparatus and a measured residual power of the wireless transmission after analog self-interference cancelation.

2. The apparatus of claim 1 , wherein the apparatus is configured to determine the measured SINR during a time interval in which the apparatus is configured to wirelessly transmit using time and frequency resources that at least partially overlap with time and frequency resources of the reference signal.

3. The apparatus of claim 1 , wherein the apparatus is configured to determine the digital SIC level based on error vector magnitude (EVM).

4. The apparatus of claim 1 , wherein the apparatus is configured to transmit information that indicates the effective SINR and wherein the information is usable to determine one or more modulation and coding schemes for subsequent wireless communications with the apparatus.

5. The apparatus of claim 1 , wherein the apparatus is configured to determine multiple effective SINRs based on determined SIC levels corresponding to multiple different modulation orders used for wireless transmission.

6. The apparatus of claim 5 , wherein the multiple different modulation orders include two or more quadrature amplitude modulation (QAM) orders.

7. A method, comprising: transmitting, by a computing device, a reference signal for full-duplex (FD) wireless communication; receiving, by the computing device, one or more channel quality indicators in a wireless communication from a receiving computing device that received the reference signal, wherein the one or more channel quality indicators are determined based on both a measured SINR of the reference signal and one or more measured self-interference cancelation (SIC) levels for the receiving computing device; and selecting, by the computing device, one or more modulation and coding schemes for subsequent FD wireless communications based on the one or more channel quality indicators, wherein the one or more modulation and coding schemes include a first modulation and coding scheme for transmissions from the receiving device and a second modulation and coding scheme for transmissions to the receiving device, wherein the first and second modulation and coding schemes are different modulation and coding schemes, and wherein the selecting is performed based on overall spectral efficiency for FD wireless communications with the receiving device.

8. The method of claim 7 , further comprising: determining, by the computing device, one or more SIC levels of the computing device; wherein the one or more modulation and coding schemes include a first modulation and coding scheme for transmissions from the receiving device and a second modulation and coding scheme for transmissions to the receiving device; and wherein the selecting of the second modulation and coding scheme is based on the determined one or more SIC levels.

9. The method of claim 7 , wherein the one or more channel quality indicators include multiple channel quality indicators corresponding to different modulation orders for transmissions from the receiving device, the method further comprising: selecting the one or more modulation and coding schemes based on the multiple channel quality indicators.

10. The method of claim 7 , further comprising: receiving information indicating a SIC classification for the receiving computing device; and estimating one or more channel quality indicators for the receiving device based on the SIC classification and the one or more received channel quality indicators; wherein the selecting is based on the estimated one or more channel quality indicators.

11. A non-transitory computer-readable medium having instructions stored thereon that are executable by a computing device to perform operations comprising: receiving a reference signal in a wireless communication; and determining an effective signal to interference plus noise ratio (SINR) for full-duplex (FD) communications, based on the reference signal, wherein the effective SINR for FD communications is based on: a measured SINR of the reference signal; and one or more measured self-interference cancelation (SIC) levels that include an analog SIC level generated by analog SIC circuitry of the computing device and a digital SIC level generated by one or more digital SIC processing elements of the computing device, wherein the analog SIC level is determined based on power of a wireless transmission by the computing device and a measured residual power of the wireless transmission after analog self-interference cancelation.

12. The non-transitory computer-readable medium of claim 11 , wherein the operations further comprise determining the digital SIC level using an error vector magnitude (EVM) determination.

13. The non-transitory computer-readable medium of claim 11 , wherein the operations further comprise transmitting information that indicates the effective SINR and wherein the information is usable to determine one or more modulation and coding schemes for subsequent wireless communications with the computing device.

14. The non-transitory computer-readable medium of claim 13 , wherein the information that indicates the effective SINR is a channel quality indicator (CQI).

15. The non-transitory computer-readable medium of claim 11 , wherein the operations further comprise determining multiple effective SINRs based on determined SIC levels corresponding to multiple different modulation orders used for wireless transmission.

16. A method, comprising: transmitting, by a computing device, a reference signal for full-duplex (FD) wireless communication; receiving, by the computing device, one or more channel quality indicators in a wireless communication from a receiving computing device that received the reference signal, wherein the one or more channel quality indicators are determined based on both a measured SINR of the reference signal and one or more measured self-interference cancelation (SIC) levels for the receiving device; determining, by the computing device, one or more SIC levels of the computing device; and selecting, by the computing device, one or more modulation and coding schemes for subsequent FD wireless communications based on the one or more channel quality indicators and the determined one or more SIC levels of the computing device, wherein the one or more modulation and coding schemes include a first modulation and coding scheme for transmissions from the receiving device and a second modulation and coding scheme for transmissions to the receiving device.

17. A method, comprising: transmitting, by a computing device, a reference signal for full-duplex (FD) wireless communication; receiving, by the computing device, one or more channel quality indicators in a wireless communication from a receiving computing device that received the reference signal, wherein the one or more channel quality indicators are determined based on both a measured SINR of the reference signal and one or more measured self-interference cancelation (SIC) levels for the receiving device, wherein the one or more channel quality indicators include multiple channel quality indicators corresponding to different modulation orders for transmissions from the receiving device; and selecting, by the computing device, one or more modulation and coding schemes for subsequent FD wireless communications based on the multiple channel quality indicators.